Question

25℃、101kPa下，碳、氢气、甲烷和葡萄糖的燃烧热依次是393.5 kJ/mol、285.8 kJ/mol

890.3kJ/mol、2800 kJ/mol，则下列热化学方程式正确的是

A．C(s)+O₂(g)＝CO(g)                   △H= ―393.5 kJ/mol

B．2H₂O(l)＝2H₂(g)+O₂(g)               △H=+571.6 kJ/mol

C．CH₄(g)+2O₂(g)＝CO₂(g)+2H₂O(g)         △H= ―890.3 kJ/mol

D．C₆H₁₂O₆(s)+6O₂(g)＝6CO₂(g)+6H₂O(l)    △H= ―2800 kJ/mol

 

Answer 1

BD

解析:略